I name my items with words that I would expect a buyer to google, then I use those same words in a description of the piece, and then the same words in my tags.
On AF, if the piece has a story I tell that in the 'inspiration box'.
I dont get all flowery with what I write, but I will put in words like beautiful or something.
In my descriptions I stick to the facts, what its made of, the size.
Example:

Title: Chainmaille Necklace and Matching Earrings in Green, Red and Purple
Description: Handmade chainmaille necklace and earrings in Anodised Aluminium rings in green, red and purple. The way the weave sits means it has a natural curve when used in a necklace.
The necklace measures approx. 38cm (15") and can be lengthened slightly if needed. It is meant to sit around the base of the neck.
The earrings are on silver plated hooks and have a drop of approx. 2cm (0.8").